Double tubular lock



S. A. E. LARSEN.

DOUBLE TUBULAR LOCK.

APPLICATION FILED JUNE 3, 1920.

1,882,091 Patented June 21,1921.

ljNiTED STATES PATENT OFFICE.

SOFUS ANDREW EMIL LARSEN, OF COPENHAGEN, DENMARK.

DOUBLE TUBULAR LOCK.

Application filed June 3, 1920. Serial No. 386,230.

T0 all/10710972 it may concern:

lie it known that I, Sorns ANDREW EMIL Larsen, subject of the Kingdom of Denmark, residing at Vesterbrogade No. 126, Copenhagen, Denmark, have invented certain new and useful Improvements in Donble Tubular Locks, of which the following is a specification.

The present invention relates to a tubular lock for doors and the like, and consists mainly therein, that the lock is manufactured as t vo cylinders, of which one, which contains the bolt, in a known manner is inserted in a hole in the edge of the door, while the other, which contains the tumbler for applying the key, is arranged at a right angle to the first one and tangentially to it in a cylindrical hole, drilled entirely through the door.

I will describe my invention by the aid of the accompanying drawing, in which:

Figure l is a longitudinal section of a door, in which the lock is used.

Fig. 2 a cross section of the same door.

Fig. 3 shows a mode of connecting the two locking cylinders.

Figs. 3 and 4 show the mode of assembling or connecting the two locking cylinders seen from the edge of the door and from the side respectively.

, On the tubular door lock 1, which is r ranged in a hole in the edge of the door, is fastened another tubular part 2, which is inserted in a hole, drilled entirely through the door. The two tubes 1 and 2 are arranged in such a manner with their axes crossing and offset relatively to each other, that one tube enters somewhat into the other.

The two tubes are in firm connection with each other by means of a projection or hook 4 (Figs. 8 and l) on the tube 2 which catches into a hole in the tube 1.

The tube 2 receives the key 6 and has wards 7, that register with the bit 8, which in the usual manner acts upon a talon 9 or similar member connected with the bolt in the tube 2. The hook 4 previously mentioned is here shown as forming a vertical extension or continuation of one of the wards.

Instead of the key and the wards being formed as illustrated on the drawing, the tube 2 may of course be constructed to receive the key and tumbler of a key of the pin-lock type or of some other type, and the tube 2 need not necessarily be cylindrical but may be made of oval or angular cross section, so long as it is made in such a manner, that it may be inserted in the hole, drilled entirely through the door.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare, that what I claim is 1-- l. A double cylinder lock comprising two cylinders disposed with their peripheral walls in contact and their axes crossing each other at right angles and ofiset relatively to each other, one cylinder having an open ing in one side thereof, and a hook on the other cylinder engaged. in said opening.

2. A double cylinder look as claimed in claim 1, in which a plurality of wards are arranged in the said other cylinder, one ward having an extension which forms said hook.

In testimony whereof I have affixed my signature.

SOFUS ANDREW EMIL LARSEN.

Witnesses AGNES HERDAM, MARTIN JUssEN. 

